<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8">
    <title>菜鸟教程(runoob.com)</title>
    <style>
        div.img {
            margin: 5px;
            border: 1px solid #ccc;
            float: left;
            width: 180px;
        }

        div.img:hover {
            border: 1px solid #777;
        }

        div.img img {
            width: 100%;
            height: auto;
        }

        div.desc {
            padding: 15px;            text-align: center;
        }
    </style>
</head>
<body>

<div class="responsive">
    <div class="img">
        <a target="_blank" href="demo1.jpg">
            <img src="demo1.jpg" alt="图片文本描述" width="300" height="200">
        </a>
        <div class="desc">这里添加图片文本描述</div>
    </div>
</div>

<div class="responsive">
    <div class="img">
        <a target="_blank" href="demo2.jpg">
            <img src="demo2.jpg" alt="图片文本描述" width="300" height="200">
        </a>
        <div class="desc">这里添加图片文本描述</div>
    </div>
</div>

<div class="responsive">
    <div class="img">
        <a target="_blank" href="demo3.jpg">
            <img src="demo3.jpg" alt="图片文本描述" width="300" height="200">
        </a>
        <div class="desc">这里添加图片文本描述</div>
    </div>
</div>

<div class="responsive">
    <div class="img">
        <a target="_blank" href="demo4.jpg">
            <img src="demo4.jpg" alt="图片文本描述" width="300" height="200">
        </a>
        <div class="desc">这里添加图片文本描述</div>
    </div>
</div>

</body>
</html>